Question

FTP Error 503 bad sequence of commands

Asked by: awilderbeast

Hello,

we have a scanning over ftp problem, im using filezilla server and using a pc on the network i can ftp fine to the server no problems at all, but we have a scanner that send scans via ftp and on the filezilla interface we get error bad sequence of commands, can anyone explain what could be happening?

output below

Thanks

000052) 18/06/2009 10:36:38 - (not logged in) (192.168.170.185)> Connected, sending welcome message...
(000052) 18/06/2009 10:36:38 - (not logged in) (192.168.170.185)> 220-FileZilla Server version 0.9.31 beta
(000052) 18/06/2009 10:36:38 - (not logged in) (192.168.170.185)> 220-written by Tim Kosse (Tim.Kosse@gmx.de)
(000052) 18/06/2009 10:36:38 - (not logged in) (192.168.170.185)> 220 Please visit http://sourceforge.net/projects/filezilla/
(000052) 18/06/2009 10:36:38 - (not logged in) (192.168.170.185)> USER anonymous
(000052) 18/06/2009 10:36:38 - (not logged in) (192.168.170.185)> 331 Password required for anonymous
(000052) 18/06/2009 10:36:38 - (not logged in) (192.168.170.185)> PASS 
(000052) 18/06/2009 10:36:38 - anonymous (192.168.170.185)> 230 Logged on
(000052) 18/06/2009 10:36:38 - anonymous (192.168.170.185)> QUIT
(000052) 18/06/2009 10:36:38 - anonymous (192.168.170.185)> 221 Goodbye
(000052) 18/06/2009 10:36:38 - anonymous (192.168.170.185)> disconnected.
(000053) 18/06/2009 10:37:00 - (not logged in) (192.168.170.185)> Connected, sending welcome message...
(000053) 18/06/2009 10:37:00 - (not logged in) (192.168.170.185)> 220-FileZilla Server version 0.9.31 beta
(000053) 18/06/2009 10:37:00 - (not logged in) (192.168.170.185)> 220-written by Tim Kosse (Tim.Kosse@gmx.de)
(000053) 18/06/2009 10:37:00 - (not logged in) (192.168.170.185)> 220 Please visit http://sourceforge.net/projects/filezilla/
(000053) 18/06/2009 10:37:00 - (not logged in) (192.168.170.185)> USER anonymous
(000053) 18/06/2009 10:37:00 - (not logged in) (192.168.170.185)> 331 Password required for anonymous
(000053) 18/06/2009 10:37:00 - (not logged in) (192.168.170.185)> PASS 
(000053) 18/06/2009 10:37:00 - anonymous (192.168.170.185)> 230 Logged on
(000053) 18/06/2009 10:37:00 - anonymous (192.168.170.185)> NLST 09061810050_1.jpg
(000053) 18/06/2009 10:37:00 - anonymous (192.168.170.185)> 503 Bad sequence of commands.
(000053) 18/06/2009 10:37:00 - anonymous (192.168.170.185)> TYPE I
(000053) 18/06/2009 10:37:00 - anonymous (192.168.170.185)> 200 Type set to I
(000053) 18/06/2009 10:37:00 - anonymous (192.168.170.185)> QUIT
(000053) 18/06/2009 10:37:00 - anonymous (192.168.170.185)> 221 Goodbye
(000053) 18/06/2009 10:37:00 - anonymous (192.168.170.185)> disconnected.
                                  
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Asked On
2009-06-18 at 02:52:56ID24501822
Topics

FTP Servers

,

FTP Software

,

Computer Scanners

Participating Experts
1
Points
500
Comments
4

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Answers

 

by: DelTremePosted on 2009-06-18 at 03:14:34ID: 24655957

The NList command (NLST 09061810050_1.jpg) requires an open data connection. The client requests such a data connection using the PASV directive.

In the server connection information, try enabling Passive mode.

 

by: awilderbeastPosted on 2009-06-18 at 03:39:54ID: 24656083

passive mode on the server interface, even though the address it is coming from is internal?

for passiv emode options i have the below screen

it says dont use for local connections too

 

by: awilderbeastPosted on 2009-06-18 at 04:09:37ID: 24656243

ok i ticked the retrieve external ip address from option and that error message has gone now

now i get error 550 directory not found from the scanner, yet i can still ftp from another computer on the network :|

 

by: awilderbeastPosted on 2009-06-18 at 04:25:32ID: 31593841

even though it says directory not found it still works!

thanks

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